Create GitHub release automatically

Author: taiki-e

.github/workflows/release.yml

@@ -0,0 +1,26 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - v[0-9]+.*
+
+env:
+  RUSTFLAGS: -D warnings
+  RUST_BACKTRACE: 1
+
+jobs:
+  create-release:
+    if: github.repository_owner == 'smol-rs'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update stable
+      - run: cargo package
+      - uses: taiki-e/create-gh-release-action@v1
+        with:
+          changelog: CHANGELOG.md
+          branch: master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}